linux-kernel - Re: [PATCH 2/3] dt-bindings: usb: atmel: Add Microchip LAN966x compatible string

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Date:   Fri, 20 May 2022 14:50:24 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Herve Codina <herve.codina@...tlin.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Horatiu Vultur <horatiu.vultur@...rochip.com>,
        linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH 2/3] dt-bindings: usb: atmel: Add Microchip LAN966x
 compatible string

On 20/05/2022 14:21, Herve Codina wrote:
>>> I think it makes sense to keep 'microchip,lan966x-udc' for the USB
>>> device controller (same controller on LAN9662 and LAN9668) and so
>>> keeping the same rules as for other common parts.  
>>
>> Having wildcard was rather a mistake and we already started correcting
>> it, so keeping the "mistake" neither gives you consistency, nor
>> correctness...
>>
> 
> I think that the "family" compatible should be present.
> This one allows to define the common parts in the common
> .dtsi file (lan966x.dtsi in our case).
> 
> What do you think about:
> - microchip,lan9662-udc
> - microchip,lan9668-udc
> - microchip,lan966-udc  <-- Family
> 
> lan966 is defined as the family compatible string since (1) in
> bindings/arm/atmel-at91.yaml and in Documentation/arm/microchip.rst
> 

You can add some family compatible, if it makes sense. I don't get why
do you mention it - we did not discuss family names, but using
wildcards... Just please do not add wildcards.

Best regards,
Krzysztof